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ITNW
The maximum number of combined Newton-Chord iterations.
When this maximum is reached, the step will be retried with
half the stepsize.
This is repeated until convergence, or until the minimum
stepsize is reached. In the latter case the computation of
the family is discontinued and a message printed in fort.9.
The recommended value is ITNW=5, but ITNW=7 may be used for
``difficult'' problems, for example,
demos spb, chu, plp, etc.
Gabriel Lord
2007-11-19